Combustible gas detector



FIG. l is a perspective view of a combustible gas detector showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a right side elevational view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The broken lines illustrate portions of the combustible gas detector that form no part of the claimed design. 

CLAIM The ornamental design for a combustible gas detector, as shown and described. 